Desert Worlds
The Plant that Makes Its Home on a Cactus
Tristerix seeds travel in bird droppings, when they land on a cactus they grow long probe-like stems, that latch onto the cactus body and inject it with parasitic threads. A year later Tristerix bursts out of the cactus skin as a bloom of beautiful flowers that attract hummingbird pollinators.
Episode Clips
How Saguaro Cacti Store 1000 Gallons of Water
The saguaro features a pleated surface which allows it to expand.
Why Elephants Eat the Baobab Tree
The baobab stores thousands of gallons of water in its spongy wood.
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